TW201517818A - Filter element for a smoking article - Google Patents

Abstract

A filter for a smoking article comprises at least one plug of filter material surrounded by a plug wrap. The plug of filter material comprises at least two segments being longitudinally aligned and rotatably mounted about a common longitudinal axis, at least one of the segments comprising at least one perforation formed in the plug wrap to allow air intake into the filter in use. A tipping paper surrounds the plug wrap. The tipping paper comprises a first part attached to a first of the two segments of the filter plug and a second part attached to the second segment of the plug wrap and comprising at least one aperture formed therein, the tipping paper parts and filter plug segments are arranged such that the respective aperture and perforation of the tipping paper and the filter plug can be superimposed upon rotation of one of the filter plug segments about its longitudinal axis to vary the filter ventilation: At least one frangible capsule in the plug of filter material is provided, said capsule containing a substance for altering the characteristics of an air stream passing though the filter in use, wherein the at least one frangible capsule and the perforation and aperture in the filter plug and tipping paper are offset from each other longitudinally in the filter.

Description

Filter element for smoking products

The present invention relates to a filter element for use in smoking articles. More particularly, the present invention relates to a filter element that enhances the smoking experience for a user by controlling the flavor and concentration of inhaled smoke with a number of user-operated components.

It is also known in the art that smoking filter elements are conventionally used, as well as user-operated components such as frangible capsules for the user to change the nature of the inhalation of smoke in the use of smoke.

For example, the filter element for smoking articles disclosed in EP 1906775 comprises a frangible capsule containing a fragrance which, when the user breaks the capsule, changes the flavor of the inhaled smoke. Thereby, the user can adjust the smoke flavor by himself during the smoking process. Other filter elements are available for the user to vary the concentration of inhaled cigarette smoke by utilizing a special mechanism operated by the user to shift the pressure drop within the filter to achieve the desired purpose. Examples of such devices can be found in patents such as WO 84/00478 or EP 0105683.

While both of these options have advantages for the user to control their smoking experience, they do not provide a wide range of smoking experiences that can be controlled by the user based on personal taste or preference when smoking.

It is an object of the present invention to provide a filter element that provides a more diverse experience for the user while still ensuring ease of use and economy of the filter element.

In order to achieve the above object, the present invention provides a filter for a smoking article, The filter element comprises: at least one filter plug, the outer side surrounding a wrap, wherein the filter plug comprises at least two filter segments, the two are longitudinally aligned, and are rotatably mounted on a common longitudinal axis, at least one of the filtering The segment includes at least one perforation formed in the wrapper to allow air to be drawn into the filter member during use; a filter paper covering the wrapper, the filter paper comprising a first portion and a second portion a portion, wherein the first portion is attached to the first filter segment of the filter plug two filter section, and the second portion is attached to the second filter segment of the wrapper and includes at least one of In the upper hole, the filter paper portion and the filter plug filter segment are disposed in such a manner that the filter paper hole and the filter material are changed when one of the filter plug filter segments is rotated on the longitudinal axis thereof to change the filter member ventilation property. The perforations of the plugs may be individually overlapped with one another; and at least one frangible capsule disposed in the filter plug and comprising a substance that, when in use, changes the characteristics of the gas stream passing through the filter, wherein the at least one frangible capsule With the filter plug Holes and tipping paper of the filter element in longitudinally offset from each other.

According to a preferred embodiment of the present invention, the frangible capsule is located in a filter plug filter section that is not provided with perforations, or the frangible capsule is located in a filter plug filter section provided with perforations, and/or the easy The broken capsule is located in a substantially central portion of the filter plug on its longitudinal axis.

Another aspect of the present invention relates to a smoking article comprising the above filter member, and a body of tobacco attached by the filter paper overlapping one end of the filter member and one end of the tobacco body At the end of the filter element.

In a preferred construction of the smoking article of the present invention, the frangible capsule is located in the filter segment of the filter plug connected to the body of the cigarette, and the other filter segment of the filter member is along the longitudinal axis of the filter member. Rotating relative to the capsule-containing filter segment and the body.

Preferably, the second portion of the filter paper having the aperture encloses a filter plug filter segment having the perforation and at least a portion of the filter plug having no perforations.

Still preferably, the first and second filter paper portions are separated by a circumferential slit around the filter plug.

By using a filter that can be manipulated by the user and has frangible capsules and convertible gas (or pressure drop), it is possible to provide a smoking article that is controlled by the user to a wide range of smoking experience. In addition, the use of filter elements that are easy to manufacture can effectively control the cost of the filter and maintain the manufacturing quality.

1‧‧‧ Filter cigarette/cigarette/cigarette products

2‧‧‧Smoke

3‧‧‧Filter/filter assembly

4‧‧‧ Filter plug / wrap / cigarette end / filter paper

5‧‧‧ mouth filter section / filter section

6‧‧‧Smoke end filter section / filter section

7‧‧‧ transverse circumferential section

8‧‧‧Perforation

9‧‧‧ filter paper

10‧‧‧First/first filter paper

11‧‧‧Second/second filter paper

12‧‧‧ Cutting line/separation line

13‧‧‧Transverse long hole / long hole

20‧‧‧ capsules

1 and 2 show a filter member of a conventional variable airflow smoking article; and Fig. 3 is a cross-sectional view of the smoking article containing the filter member of the present invention.

Referring to FIG. 1, the filter cigarette 1 is composed of a tobacco body 2 and a filter member 3. The filter member 3 is operable by the user to adjust the gas permeability of the filter member to adjust the taste intensity of the cigarette. The filter element 3 comprises a filter plug 4, such as cellulose acetate, the outer surface of which extends over a covering. The filter element 3 is divided into a mouth end filter section 5 and a smoke end filter section 6 by a transverse circumferential section 7 perpendicular to the longitudinal axis of the cigarette 1. The cut surface 7 only occupies one part of the diameter of the filter plug 4, so that a central connecting filter portion remains between the two filter sections 5, 6. This connecting portion can be used as a rotating shaft of the two filter segments 5, 6 with respect to each other in order to adjust the gas exchangeability of the filter member, which will be described in detail below.

The wrapper 4 of the filter section 6 of the filter element 3 is provided with at least one perforation 8 adjacent to the tobacco body 2. This perforation 8 allows air to pass through the cladding 4 and into the core of the filter element 3. When the filter member 3 is assembled to the tobacco body 2, the wrapper 4 and the filter segments 5, 6 are rolled up from the outside using a filter paper 9. The filter paper 9 is divided into two sections 10, 11 which can be separated from the pre-cut line or the cutting line 12. The first section 10 of the filter paper 9 is glued to the mouth end filter section 5 of the cigarette 1, and extends through the section 7 of the two filter sections 5 and 6, and partially covers the second filter section 6 and the perforation 8 but is not glued. In the second filter section 6. The first filter paper 10 comprises at least one transverse elongated hole 13 corresponding in position to the perforation 8 of the second filter segment 6. The second section 11 of the filter paper 9 is glued to the portion of the filter end 6 that is not covered by the first cut filter paper 10 and the body 2, whereby the filter element 3 is attached to the body 2 .

2 shows the state in which the long hole 13 of the first section 10 of the filter paper 9 of FIG. 1 is aligned with the perforation 8.

The filter element 3 and the filter paper 9 are constructed such that the mouth end filter section 5 is rotatable relative to the tobacco end filter section 6 connected to the body 2 along the longitudinal axis of the cigarette 1. The rotation causes the perforation 8 on the cigarette end filter section 6 and the long hole 13 in the first cut-off filter paper 10 to change positions respectively, as shown in FIG. 3, thereby adjusting the gas permeability of the filter member, thereby changing the cigarette 1 strength. Although the description and drawings provided herein only refer to changing the gas venting property of the filter member 3 by a perforation 8 and a long hole 13, it is only known that the same perforation 8 and/or the long hole 13 can be used to achieve the same filter replacement. The gas adjustment function is also based on the principle that the ventilation of the perforation 8 and the long hole 13 is caused by the relative rotation of the filter end section 5 and the cigarette end section 6 to adjust the ventilation.

Figure 3 is a cross-sectional view of the position of the plurality of filter elements 3 at the perforations 8 and the elongated holes 13. As can be seen from the figure, the relative rotation of the mouth end filter section 5 and the cigarette end filter section 6 in either direction can adjust the relative position of the long hole 13 and the perforation 8 to control the cigarette 1 to pass through the long hole 13 and the perforation 8 when smoking. The amount of air entering the filter element 3. The second filter section 6 contains a frangible capsule 20. Alternatively, the frangible capsule can be located in the mouth end filter section 5 or even the two filter sections 5, 6 each having a capsule. The frangible capsule 20 is preferably located in the filter element 3 and is longitudinally offset from the elongated hole 13 and the perforation 8. Preferably, the frangible capsule 20 is adjacent to the tobacco body 2 or in the mouth end filter section 5 to prevent improper pressure and moisture from being caused by the central connection portion between the filter sections 5 and 6 when the frangible capsule 20 is activated. In use, the user can rotate the mouth end filter section to change the relative position of the long hole 13 and the perforation 8 and thereby adjust the ventilation property of the filter member 3, thereby changing the user's possession after the cigarette body is 2 points. Air mixture. In addition, the user can further change the smoking experience by breaking the fragile capsule 20 to change the characteristics of the inhaled smoke (especially its concentration and/or taste).

As shown in the figure, the capsule 20 is preferably positioned at the center of the filter member 3, and the elongated hole 13 and the perforation 8 are formed on the filter paper and the soot end filter section 6, respectively, and are offset from the center to ensure manufacture. In the case of the filter element, the formation of the perforations 8 and the elongated holes 13 does not damage the capsule 20. This structure also ensures that the filter plug does not need to be too long to provide the user with the proper shape, hardness and function.

An exemplary method of making the filter of the present invention is described below.

In the first stage of manufacture, the capsule 20 is inserted into a filter plug material, such as cellulose acetate chips, in a manner conventional in the art of cigarette filter manufacture. Thereby a continuous filter rod containing the equidistantly dispersed capsules therein is produced. The continuous rod is then wrapped with a wrap to secure the cellulose acetate chips into segments to produce individual filter assemblies 3, each containing at least one capsule 20.

The individual filter unit 3 is then put into a conventional smoking product manufacturing machine equipped with a processing module, and the filter unit 3 and the body 2 are assembled into a cigarette 1. The filter assembly is then cut transversely to form two rotatable interconnect filter segments 5, 6. A perforation 8 is provided on the filter assembly 3 by means of laser or knife cutting. Then perforated or cut on the filter paper 4, preferably pre-cut, to define a separation line 12 between the two 10, 11 filter papers 9, and then used to wrap the filter 3, and the tobacco body 2 Connected to form a cigarette product. Finally, the perforations 8 of the soot end filter section 6 and the corresponding long holes 13 of the filter paper 4 are simultaneously formed on the filter assembly 3 by laser or knife cutting. Finally, the mouth end filter section 5 is twisted to displace the perforations 8 of the filter member and the long holes 13, whereby the cigarette product 1 is set to the lowest ventilation state of the filter unit 3. The finished cigarette products can then be collected into bundles and sold after packaging.

3‧‧‧Filter/filter assembly

6‧‧‧Smoke end filter section / filter section

8‧‧‧Perforation

10‧‧‧First/first filter paper

13‧‧‧Transverse long hole / long hole

20‧‧‧ capsules

Claims (8)

A filter for smoking articles, the filter comprising: at least one filter plug, the outer side surrounding a wrap, wherein the filter plug comprises at least two filter segments, the two are longitudinally aligned and rotatably mounted to the On the common longitudinal axis, at least one of the filter segments comprises at least one perforation formed on the wrapper to allow air to be drawn into the filter member during use; a filter paper to wrap the wrapper, the filter The nozzle paper includes a first portion and a second portion, wherein the first portion is attached to the first filter segment of the filter plug two filter segments, and the second portion is attached to the second filter of the wrapper a segment comprising at least one hole disposed therein, the filter paper portion and the filter plug filter segment being disposed in such a manner that when one of the filter plug filter segments rotates on a longitudinal axis thereof, the filter member is ventilated The pores of the filter paper and the perforations of the filter plug may overlap each other individually; and at least one frangible capsule disposed in the filter plug and including a change in gas flow characteristics through the filter during use Substance, of which Holes perforated a frangible capsule of the filter plug and tipping paper of the filter element in longitudinally offset from each other. The filter of claim 1, wherein the frangible capsule is in a filter plug filter section that is not provided with perforations. The filter of claim 1 wherein the frangible capsule is in a filter plug filter section provided with perforations. The filter of claim 1 wherein the frangible capsule is located in a substantially central portion of the filter plug on a longitudinal axis thereof. A smoking article, comprising the filter member according to any one of claims 1 to 3, and a cigarette body, the cigarette body being attached to the filter at one end of the filter member and one end of the tobacco body Paper is attached to the end of the filter. The smoking article of claim 4, wherein the frangible capsule is located in the filter segment of the filter plug connected to the body of tobacco, and the other filter segment of the filter member is relative to the longitudinal axis of the filter member The capsule-containing filter section and the body of the cigarette rotate. The smoking article of any one of claims 1 to 6, wherein the second portion of the filter paper having the aperture surrounds at least a portion of the filter plug filter segment having the perforation and a filter plug having no perforations. The smoking article of any one of claims 1 to 7, wherein the first and second filter paper portions are separated by a circumferential slit surrounding the filter plug.